ENCS406 Lecture Notes - Lecture 6: Cirsium Arvense, Lathyrus, Livestock Grazing Comparison

• School: University of Alberta
• Department: Environmental and Conservation Sciences
• Course: ENCS406
• Professor: Edward Bork

Document Summary

Transition zone from prairie to southern boreal forest (fairly large area) Two sub-regions: outhern aspen (cid:862)groveland(cid:863, northern parkland. Annual ppt is 425mm, peaks in july (growing season: the majority of ppt is in the summer because the summer jet stream (blue) falls right over this area. Meanwhile the winter jet stream (red) travels south of the aspen parkland: p:e of 0. 7 near mgp in the south and 1. 0 near boreal mixedwood in the north, colder winters with more snow than prairie ecoprovince. Modal soils: groveland black chernozems under grasslands aspen. On this south-fa(cid:272)i(cid:374)g bla(cid:272)k che(cid:396)(cid:374)oze(cid:373) slope, (cid:449)ood(cid:455) spe(cid:272)ies (cid:449)o(cid:374)"t (cid:271)e a(cid:271)le to e(cid:374)(cid:272)(cid:396)oa(cid:272)h he(cid:396)e (cid:271)e(cid:272)ause it"s too d(cid:396)(cid:455). We call this a topo-edaphic climax degree of development by a community is limited by the microclimates that result from topography: northern parkland dark gray chernozems under forest/grassland. On this south-facing slope with black chernozems, topo-edaphic climax does(cid:374)"t apply.